Light hidden photon production in high energy collisions

Demidov, S.V.; Gninenko, S.; Gorbunov, D.

doi:10.1007/jhep07(2019)162

Cited by 11 publications

(10 citation statements)

References 27 publications

(56 reference statements)

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“…Therefore, for m X > 1 keV we recover the Compton result, and for m X < 1 keV the production process gets strongly suppressed, P = 2 × (m X /1 keV) 4 . This behavior is similar to that in case of neutrino reactor experiments.…”

Section: Accelerator Experimentssupporting

confidence: 72%

“…which yields: P = 2 , the Compton result for heavy hidden photons, m X m γ ; P = 2 × (m X /m γ ) 4 , a strong suppression of production of light hidden photons, m X m γ ; possible amplification, upto P = 10 5 × 2 for the degenerate case, m X = m γ , that is resonance. The hidden photon flies away form the reactor and can oscillate back into photon inside the detector of size L 1/Γ with probability (4) where Γ ≡ 0.…”

Section: Vector Portal To the Hidden Worldmentioning

confidence: 97%

“…The point is that formulas above are valid for the homogeneous case only, but can be easily modified for the general case, e.g. of composite source or multi-layer detector [4]. It requires a good knowledge of the geometry and inner structure of both sites and hence this study must be performed by the corresponding collaborations.…”

Section: Vector Portal To the Hidden Worldmentioning

confidence: 99%

“…Moreover, there are many concrete beyond the SM theories which suggest such theoretical motivations. The present talk is partly based on some finished papers [2,3] and work in progress [4], and aimed at stimulating collaborations of the relevant intensity frontier experiments (TEXONO, NEOS, DANSS, NA64, SHiP, DUNE, T2K, MicroBooNE, etc) to perform searches for the light hidden photons following the theoretical analysis presented below, which accounts for oscillations between photon and hidden photon very similar to neutrino oscillation phenomena.…”

Section: Introductionmentioning

confidence: 99%

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Oscillations to hidden photon in reactor and accelerator experiments

Gorbunov

2018

EPJ Web Conf.

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Possible connection between visible and hidden Worlds of particle physics is provided by the vector portal interaction, that is kinetic mixing between ordinary (visible) and hidden photons. If sufficiently light, the hidden photon can be produced (and absorbed) by ordinary matter in a Compton-like processes, which naively are insensitive to the hidden photon mass. In this talk we study the evolution of the two vector boson system, which exhibits oscillations similar to the well-known neutrino oscillations. We show that, provided by the environment matter, this quantum phenomenon significantly suppresses the hidden photon production in particle collisions. The ordinary photon is effectively massive in the media. The suppression is important for hidden photon lighter than photon in the corresponding media (detector, beam dump material etc) and grows with decrease of the hidden photon mass making all the accelerator and reactor experiments absolutely insensitive to the models with light photons. The dedicated study is required for the case of the degenerate photon and hidden photon, when, on the contrary, the hidden photon production can be amplified with respect to the Compton process.

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Section: Accelerator Experimentssupporting

confidence: 72%

Section: Vector Portal To the Hidden Worldmentioning

confidence: 97%

Section: Vector Portal To the Hidden Worldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Oscillations to hidden photon in reactor and accelerator experiments

Gorbunov

2018

EPJ Web Conf.

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“…The dominant interaction between the conventional photons and the hidden photons is realized through the gauge kinetic mixing between them. In the literature, different methods have been proposed to constrain the coupling and mass of hidden photons using astrophysical and cosmological observations [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76]. Here, we will consider only a generic photon-spin-1-massive-particle scattering, leaving the extension of our final set of equations for specific cases to future work.…”

Section: Polarization Mixing From Photon and Massive Spin-1 Particmentioning

confidence: 99%

CMB V modes from photon-photon forward scattering revisited

et al. 2020

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Recent literature has shown that photon-photon forward scattering mediated by Euler-Heisenberg interactions may generate some amount of the circular polarization (V modes) in the cosmic microwave background (CMB) photons. However, there is an apparent contradiction among the different references about the predicted level of the amplitude of this circular polarization. In this work, we will resolve this discrepancy by showing that with a quantum Boltzmann equation formalism, we obtain the same amount of circular polarization as using a geometrical approach that is based on the index of refraction of the cosmological medium. We will show that the expected amplitude of V modes is expected to be ≈8 orders of magnitude smaller than the amplitude of E-polarization modes that we actually observe in the CMB, thus confirming that it is going to be challenging to observe such a signature. Throughout the paper, we also develop a general method to study the generation of V modes from photon-photon and photon-spin-1massive-particle forward scatterings without relying on a specific interaction, which thus represent possible new signatures of physics beyond the Standard Model.

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Dark photon search at Yemilab, Korea

Seo

Kim

2021

J. High Energ. Phys.

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Dark photons are well motivated hypothetical dark sector particles that could account for observations that cannot be explained by the standard model of particle physics. A search for dark photons that are produced by an electron beam striking a thick tungsten target and subsequently interact in a 3 kiloton-scale neutrino detector in Yemilab, a new underground lab in Korea, is proposed. Dark photons can be produced by “darkstrahlung” or by oscillations from ordinary photons produced in the target and detected by their visible decays, “absorption” or by their oscillation to ordinary photons. By detecting the absorption process or the oscillation-produced photons, a world’s best sensitivity for measurements of the dark-photon kinetic mixing parameter of ϵ2> 1.5 × 10−13(6.1 × 10−13) at the 95% confidence level (C.L.) could be obtained for dark photon masses between 80 eV and 1 MeV in a year-long exposure to a 100 MeV–100 kW electron beam with zero (103) background events. In parallel, the detection of e+e− pairs from decays of dark photons with mass between 1 MeV and ∼86 MeV would have sensitivities of ϵ2>$$ \mathcal{O}\left({10}^{-17}\right)\left(\mathcal{O}\left({10}^{-16}\right)\right) $$ O 10 − 17 O 10 − 16 at the 95% C.L. with zero (103) background events. This is comparable to that of the Super-K experiment under the same zero background assumption.

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Light hidden photon production in high energy collisions

Cited by 11 publications

References 27 publications

Oscillations to hidden photon in reactor and accelerator experiments

Oscillations to hidden photon in reactor and accelerator experiments

CMB V modes from photon-photon forward scattering revisited

Dark photon search at Yemilab, Korea

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